Colbie Caillat surprised 'Friends' fans at the Central Perk coffee pop-up shop in New York City by singing 'Smelly Cat'!

In celebration of the show's 20th anniversary, a 'Friends'-themed coffee shop opened in lower Manhattan on Sept. 17, complete with actual props and decorations used in the show's famous coffee house setting.

On Friday, Oct. 3, Caillat made a surprise appearance where she sang with the crowd the lyrics to 'Smelly Cat,' a song made famous by one of the show's character, Phoebe Buffay (played by Lisa Kudrow).

She also treated fans to a performance of 'Try,' her single off her latest album, 'Gypsy Heart.' 'Try' was co-written by Babyface and its video reached 9 million views during its first week.

Check out Caillat's surprise performances by watching the videos below.

Colbie Caillat Sings 'Smelly Cat' in NYC Central Perk Shop

Colbie Caillat Sings 'Try' in NYC Central Perk Shop

Colbie Caillat + Shane Harper Talk Collaboration

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